binary search tool: Alert user if --file_args required

Check for OS Error E2BIG when running switch script. If this happens
that means that --file_args is required.

TEST=Test with list of android objects, properly fails

Change-Id: If795ea5f45956ed0e5dd5eb6a9852f02d9f5978f
Reviewed-on: https://chrome-internal-review.googlesource.com/271688
Commit-Ready: Cassidy Burden <cburden@google.com>
Tested-by: Cassidy Burden <cburden@google.com>
Reviewed-by: Caroline Tice <cmtice@google.com>
Reviewed-by: Han Shen <shenhan@google.com>
1 file changed